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. Author manuscript; available in PMC: 2009 Jun 8.
Published in final edited form as: Drug Alcohol Depend. 2006 Nov 28;88(2-3):214–223. doi: 10.1016/j.drugalcdep.2006.10.011

Figure 4.

Figure 4

Figure 4

Participant retention for Study 1 (Plot A) or Study 2 (Plot B). No significant differences in retention seen between groups in either study.